How to get all apps installed on android phone

问题

This is the code that i have at the moment but i still can't get a list of all the apps on the phone. Does anyone see what i am doing wrong?

public class GetAppList extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        try {
            List<PackageInfo> appListInfo1 = this.getPackageManager()
            .getInstalledPackages(0);
            JSONArray ja = new JSONArray();
            try {
                HttpClient httpclient = new DefaultHttpClient();
                Object sendDataUrl = null;
                HttpPost request = new HttpPost(sendDataUrl.toString());
                List<NameValuePair> params = new ArrayList<NameValuePair>();
                ContextWrapper context = null;
                PackageManager pm = context.getPackageManager();
                List<PackageInfo> appListInfo = pm.getInstalledPackages(0);
                for (PackageInfo p : appListInfo) {
                    if (p.applicationInfo.uid > 10000) {
                        JSONObject jo = new JSONObject();
                        jo.put("label", p.applicationInfo.loadLabel(pm).toString());
                        jo.put("packageName", p.applicationInfo.packageName);
                        ja.put(jo);
                    }
                    System.out.print(ja);
                }        
        } catch (Exception e) {
            // TODO: handle exception
        }
        finally {
            // ... cleanup that will execute whether or not an error occurred ...
        }



}catch (Exception e) {
    // TODO: handle exception
}
finally {
    // ... cleanup that will execute whether or not an error occurred ...
}
    }}

Sorry cant get this to format the code properly.

回答1:

This code logs name and package name of all the installed applications. You can easily check the log using LogCat (if you are using Eclipse).

Package name - name of the app's package.

Name - text label associated with the application. You can't use just appInfo.name as it will return null. Using appInfo.loadLabel(packageManager) you get the actual app's name like Speech Recorder instead of package name com.android.speechrecorder.

final PackageManager packageManager = getPackageManager();
List<ApplicationInfo> installedApplications = 
   packageManager.getInstalledApplications(PackageManager.GET_META_DATA);

for (ApplicationInfo appInfo : installedApplications)
{
    Log.d("OUTPUT", "Package name : " + appInfo.packageName);
    Log.d("OUTPUT", "Name: " + appInfo.loadLabel(packageManager));
} 

回答2:

This is the code I use to list applications:

PackageManager pm = this.getPackageManager();
Intent intent = new Intent(Intent.ACTION_MAIN, null);

String activityName = rInfo.activityInfo.name;
List<ResolveInfo> list = pm.queryIntentActivities(intent, PackageManager.PERMISSION_GRANTED);

for (ResolveInfo rInfo : list) {
    pkg = rInfo.activityInfo.applicationInfo.packageName;
    if (pm.getLaunchIntentForPackage(pkg) == null) {
      continue;
    }
    String label = rInfo.activityInfo.applicationInfo.loadLabel(pm).toString();
    arrayList.add(new AppEntry(label, activityName, pkg, null));
}

If you later on want to run application only knowing pkg and activityName you can do:

Intent intent = new Intent(Intent.ACTION_MAIN, null);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setClassName(pkg, activityname);
ctx.startActivity(intent);

来源：https://stackoverflow.com/questions/5393607/how-to-get-all-apps-installed-on-android-phone